Class: Caldecott::Server::WebSocketTunnel

Inherits:
Object
  • Object
show all
Defined in:
lib/caldecott/server/websocket_tunnel.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.run!(opts) ⇒ Object

quack like sinatra



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# File 'lib/caldecott/server/websocket_tunnel.rb', line 11

def self.run!(opts)
  WebSocketTunnel.new.start(opts[:port])
end

Instance Method Details

#start(port) ⇒ Object 



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# File 'lib/caldecott/server/websocket_tunnel.rb', line 15

def start(port)
  EM::WebSocket.start(:host => "0.0.0.0", :port => port) do |ws|
    log = SessionLogger::new("server", STDOUT)
    dst_conn = nil

    ws.onopen do
      log.debug "tunnel connected"
      slash, tunnel, host, port = ws.request['Path'].split('/')

      EM::connect(host, port, TcpConnection) do |d|
        dst_conn = d

        dst_conn.onopen do
          log.debug "target connected"
        end

        dst_conn.onreceive do |data|
          log.debug("t <- d #{data.length}")
          ws.send(Base64.encode64(data))
        end

        dst_conn.onclose do
          log.debug "target disconnected"
          ws.close_connection
        end
      end
    end

    ws.onmessage do |msg|
      decoded = Base64.decode64(msg)
      log.debug("t -> d #{decoded.length}")
      dst_conn.send_data(decoded)
    end

    ws.onclose do
      log.debug "tunnel disconnected"
      dst_conn.close_connection_after_writing if dst_conn
    end
  end
end